diff options
Diffstat (limited to 'compiler/semgnrc.nim')
| -rw-r--r-- | compiler/semgnrc.nim | 101 |
1 files changed, 76 insertions, 25 deletions
diff --git a/compiler/semgnrc.nim b/compiler/semgnrc.nim index 638b4311b..2639aba6c 100644 --- a/compiler/semgnrc.nim +++ b/compiler/semgnrc.nim @@ -61,6 +61,7 @@ template canOpenSym(s): bool = proc semGenericStmtSymbol(c: PContext, n: PNode, s: PSym, ctx: var GenericCtx; flags: TSemGenericFlags, + isAmbiguous: bool, fromDotExpr=false): PNode = result = nil semIdeForTemplateOrGenericCheck(c.config, n, ctx.cursorInBody) @@ -72,9 +73,15 @@ proc semGenericStmtSymbol(c: PContext, n: PNode, s: PSym, result.transitionSonsKind(nkClosedSymChoice) else: result = symChoice(c, n, s, scOpen) - if result.kind == nkSym and canOpenSym(result.sym): - result.flags.incl nfOpenSym - result.typ = nil + if canOpenSym(s): + if openSym in c.features: + if result.kind == nkSym: + result = newOpenSym(result) + else: + result.typ = nil + else: + result.flags.incl nfDisabledOpenSym + result.typ = nil case s.kind of skUnknown: # Introduced in this pass! Leave it as an identifier. @@ -98,13 +105,28 @@ proc semGenericStmtSymbol(c: PContext, n: PNode, s: PSym, if s.typ != nil and s.typ.kind == tyStatic: if s.typ.n != nil: result = s.typ.n + elif c.inGenericContext > 0 and withinConcept notin flags: + # don't leave generic param as identifier node in generic type, + # sigmatch will try to instantiate generic type AST without all params + # fine to give a symbol node a generic type here since + # we are in a generic context and `prepareNode` will be called + result = newSymNodeTypeDesc(s, c.idgen, n.info) + if canOpenSym(result.sym): + if openSym in c.features: + result = newOpenSym(result) + else: + result.flags.incl nfDisabledOpenSym + result.typ = nil else: result = n else: result = newSymNodeTypeDesc(s, c.idgen, n.info) if canOpenSym(result.sym): - result.flags.incl nfOpenSym - result.typ = nil + if openSym in c.features: + result = newOpenSym(result) + else: + result.flags.incl nfDisabledOpenSym + result.typ = nil onUse(n.info, s) of skParam: result = n @@ -112,18 +134,41 @@ proc semGenericStmtSymbol(c: PContext, n: PNode, s: PSym, of skType: if (s.typ != nil) and (s.typ.flags * {tfGenericTypeParam, tfImplicitTypeParam} == {}): + if isAmbiguous: + # ambiguous types should be symchoices since lookup behaves + # differently for them in regular expressions + maybeDotChoice(c, n, s, fromDotExpr) + return result = newSymNodeTypeDesc(s, c.idgen, n.info) if canOpenSym(result.sym): - result.flags.incl nfOpenSym - result.typ = nil + if openSym in c.features: + result = newOpenSym(result) + else: + result.flags.incl nfDisabledOpenSym + result.typ = nil + elif c.inGenericContext > 0 and withinConcept notin flags: + # don't leave generic param as identifier node in generic type, + # sigmatch will try to instantiate generic type AST without all params + # fine to give a symbol node a generic type here since + # we are in a generic context and `prepareNode` will be called + result = newSymNodeTypeDesc(s, c.idgen, n.info) + if canOpenSym(result.sym): + if openSym in c.features: + result = newOpenSym(result) + else: + result.flags.incl nfDisabledOpenSym + result.typ = nil else: result = n onUse(n.info, s) else: result = newSymNode(s, n.info) if canOpenSym(result.sym): - result.flags.incl nfOpenSym - result.typ = nil + if openSym in c.features: + result = newOpenSym(result) + else: + result.flags.incl nfDisabledOpenSym + result.typ = nil onUse(n.info, s) proc lookup(c: PContext, n: PNode, flags: TSemGenericFlags, @@ -145,7 +190,7 @@ proc lookup(c: PContext, n: PNode, flags: TSemGenericFlags, elif s.isMixedIn: result = symChoice(c, n, s, scForceOpen) else: - result = semGenericStmtSymbol(c, n, s, ctx, flags) + result = semGenericStmtSymbol(c, n, s, ctx, flags, amb) # else: leave as nkIdent proc newDot(n, b: PNode): PNode = @@ -161,10 +206,11 @@ proc fuzzyLookup(c: PContext, n: PNode, flags: TSemGenericFlags, let luf = if withinMixin notin flags: {checkUndeclared, checkModule} else: {checkModule} + c.isAmbiguous = false var s = qualifiedLookUp(c, n, luf) if s != nil: isMacro = s.kind in {skTemplate, skMacro} - result = semGenericStmtSymbol(c, n, s, ctx, flags) + result = semGenericStmtSymbol(c, n, s, ctx, flags, c.isAmbiguous) else: n[0] = semGenericStmt(c, n[0], flags, ctx) result = n @@ -178,24 +224,21 @@ proc fuzzyLookup(c: PContext, n: PNode, flags: TSemGenericFlags, isMacro = s.kind in {skTemplate, skMacro} if withinBind in flags or s.id in ctx.toBind: if s.kind == skType: # don't put types in sym choice - result = newDot(result, semGenericStmtSymbol(c, n, s, ctx, flags, fromDotExpr=true)) + var ambig = false + if candidates.len > 1: + let s2 = searchInScopes(c, ident, ambig) + result = newDot(result, semGenericStmtSymbol(c, n, s, ctx, flags, + isAmbiguous = ambig, fromDotExpr = true)) else: result = newDot(result, symChoice(c, n, s, scClosed)) elif s.isMixedIn: result = newDot(result, symChoice(c, n, s, scForceOpen)) else: + var ambig = false if s.kind == skType and candidates.len > 1: - var ambig = false - let s2 = searchInScopes(c, ident, ambig) - if ambig: - # this is a type conversion like a.T where T is ambiguous with - # other types or routines - # in regular code, this never considers a type conversion and - # skips to routine overloading - # so symchoices are used which behave similarly with type symbols - result = newDot(result, symChoice(c, n, s, scForceOpen)) - return - let syms = semGenericStmtSymbol(c, n, s, ctx, flags, fromDotExpr=true) + discard searchInScopes(c, ident, ambig) + let syms = semGenericStmtSymbol(c, n, s, ctx, flags, + isAmbiguous = ambig, fromDotExpr = true) result = newDot(result, syms) proc addTempDecl(c: PContext; n: PNode; kind: TSymKind) = @@ -262,7 +305,9 @@ proc semGenericStmt(c: PContext, n: PNode, # check if it is an expression macro: checkMinSonsLen(n, 1, c.config) let fn = n[0] + c.isAmbiguous = false var s = qualifiedLookUp(c, fn, {}) + let ambig = c.isAmbiguous if s == nil and {withinMixin, withinConcept}*flags == {} and fn.kind in {nkIdent, nkAccQuoted} and @@ -315,7 +360,12 @@ proc semGenericStmt(c: PContext, n: PNode, of skType: # bad hack for generics: if (s.typ != nil) and (s.typ.kind != tyGenericParam): - result[0] = newSymNodeTypeDesc(s, c.idgen, fn.info) + if ambig: + # ambiguous types should be symchoices since lookup behaves + # differently for them in regular expressions + result[0] = sc + else: + result[0] = newSymNodeTypeDesc(s, c.idgen, fn.info) onUse(fn.info, s) first = 1 else: @@ -563,7 +613,8 @@ proc semGenericStmt(c: PContext, n: PNode, else: body = getBody(c.graph, s) else: body = n[bodyPos] - n[bodyPos] = semGenericStmtScope(c, body, flags, ctx) + let bodyFlags = if n.kind == nkTemplateDef: flags + {withinMixin} else: flags + n[bodyPos] = semGenericStmtScope(c, body, bodyFlags, ctx) closeScope(c) of nkPragma, nkPragmaExpr: discard of nkExprColonExpr, nkExprEqExpr: |